Unlock instant, AI-driven research and patent intelligence for your innovation.

Radiation heat-convection integrated synthesis gas cooler

A synthesis gas cooler and convective heat transfer technology, which is applied in the steam generation method using heat carrier, the manufacture of combustible gas, and joint combustion mitigation, etc. To solve problems such as large land area, to achieve the effect of improving energy utilization efficiency, saving manufacturing costs and reducing investment costs

Active Publication Date: 2012-11-21
SHANGHAI BOILER WORKS
View PDF5 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The overall layout of the system is relatively complicated, especially the water-cooled walls in the radiation waste pot and the convection waste pot are prone to slagging and clogging, and the overall floor area is large and the investment is high.
[0005] Chinese patent CN200720011769 discloses a single-sided water-cooled wall radiant waste heat boiler. Since only one side of the water-cooled wall in the radiant waste boiler has the effect of absorbing heat and cooling down, and limited by the overall size of the radiant waste boiler, its internal space has not been rationally utilized.
Chinese patent CN200910309656 discloses a double-sided water-cooled wall waste heat boiler, which adopts an octahedral water-cooled wall design, and has multiple screen-type water-cooled walls inside the inner cylinder water-cooled wall. The structure is complex and the flow field has a certain Inhomogeneity, and directly accepting the flow of high-temperature molten ash particles, it is easy to form ash accumulation and slagging phenomenon on the water cooling wall. With the increase of ash accumulation, the heat transfer boundary conditions will deteriorate, so forming a vicious cycle may cause slag blockage, etc. Bad working conditions

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Radiation heat-convection integrated synthesis gas cooler
  • Radiation heat-convection integrated synthesis gas cooler
  • Radiation heat-convection integrated synthesis gas cooler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Applying a radiation and convective heat exchange integrated synthesis gas cooler provided by the present invention to a large-scale (raw coal processing capacity of 1000t / d-3000t / d) coal-water slurry entrained-bed gasification system or dry coal powder entrained-bed gasification When in the system, when the convection panel water wall 15 is set, the main performance indicators that can be achieved are as follows:

[0046] Heat dissipation loss: <0.3%;

[0047] Availability rate: >96%;

[0048] Syngas cooler inlet temperature: 1100~1400℃;

[0049] Syngas cooler outlet temperature: 200~300℃;

[0050] Operating pressure (pipe side): >10.0MPa;

[0051] Operating pressure (shell side): >4.0MPa;

[0052] The inner cylinder membrane water wall 14 by-products high temperature and high pressure steam, and the convection screen water wall 15 by-produces medium temperature and medium pressure steam.

Embodiment 2

[0054] Applying a radiation and convective heat exchange integrated synthesis gas cooler provided by the present invention to a large-scale (raw coal processing capacity of 1000t / d-3000t / d) coal-water slurry entrained-bed gasification system or dry coal powder entrained-bed gasification When in the system, when the convective screen type water cooling wall 15 is removed, the main performance indicators that can be achieved are as follows:

[0055] Heat dissipation loss: <0.4%;

[0056] Availability rate: >96%;

[0057] Syngas cooler inlet temperature: 1100~1400℃;

[0058] Syngas cooler outlet temperature: 250~350℃;

[0059] Operating pressure (pipe side): >10.0MPa;

[0060] Operating pressure (shell side): >4.0MPa;

[0061] The inner tube membrane water wall 14 produces high-temperature and high-pressure steam by-product.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a radiation heat-convection integrated synthesis gas cooler. The cooler is characterized by comprising a casing, a film type water cooling wall is arranged on the periphery of a central flow channel of the casing, annular space is arranged between the film type water cooling wall and the casing, a top header which is connected with the film type water cooling wall is connected with a gas water separator through a water outlet of the water cooling wall, a quench air inlet is arranged on the upper portion of the film type water cooling wall, a quench air inlet pipeline is connected with the quench air inlet through a quench air inlet header, a synthesis gas outlet is arranged on the side of the top of the casing, and a water inlet of the water cooling wall is arranged on the side of the lower portion of the casing and is connected with the film type water cooling wall. By the aid of the cooler, defects of the existing prior art are overcome, radiant syngas coolers and convective syngas coolers are combined into a synthesis gas cooler, the probability of ash deposit and slagging of the film type water cooling wall is reduced to the maximum extent, the occupied area is small, the utilization rate of energy is greatly improved and the production cost is reduced.

Description

technical field [0001] The invention relates to a radiation and convection heat exchange integrated synthesis gas cooler, which belongs to the technical field of sensible heat recovery of high-temperature and high-pressure products after gasification of carbon-containing solid fuels. Background technique [0002] The Integrated Gasification Combined Cycle (IGCC) that is currently emerging is considered to be one of the cleanest and most efficient coal-based power generation technologies in the world. In order to obtain a higher carbon conversion rate and cold gas efficiency, the IGCC gasifier usually operates under high temperature and high pressure conditions, and the gasification product at the outlet of the gas furnace has a relatively high temperature (1200-1600°C). Whether the sensible heat of gasification products can be fully recovered or not has a very important impact on the energy utilization efficiency of the entire system. [0003] Under the current technical co...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C10K1/04C10K1/00C10J3/84C10J3/80C10J3/86F22B1/18
CPCY02E20/18Y02P20/10
Inventor 倪建军乌晓江张建文熊杰
Owner SHANGHAI BOILER WORKS